AUTHOR=Du Ruilin , Yan Shuo , Yao Wenna , Zhang Huimin , Xue Yue , Zhao Yulong , Cao Guifang , Liu Jun , Zhang Yong , Li Xihe , Bao Siqin , Song Yongli TITLE=Discrepancies in the rumen microbiome, metabolome, and serum metabolome among Hu sheep, East Friesian sheep, and East Friesian × Hu crossbred sheep JOURNAL=Frontiers in Microbiology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2025.1498050 DOI=10.3389/fmicb.2025.1498050 ISSN=1664-302X